Changing Accounts and Sync Settings
1. From the Home screen, touch > Settings > Accounts and Sync.
2. Change any of the following settings:
* Background Data—select the check box to allow Google™ services to send and receive data any time.
* Auto-Sync—select the check box to synchronize your account data automatically.
* Add New Account—add a Google account to your device. See Synchronizing with a Google™ Account for more information.
* Touch an account name to select the types of data you want to synchronize.